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From: david mccandless <daval@iprimus.com.au>
Subject: Re: [FlyRotary] Re: PP Construction..
Date: Sat, 30 Jun 2007 10:24:13 +0800
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>


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On 30, Jun , at 9:08 AM, Ed Anderson wrote:

> Doug, I have not tried that particular brazing job, but I think it=20
> would be much better than just about any other method so far=20
> mentioned.=A0 However, that rotor housing =A0is=A0 a large mass of =
aluminum=20
> to get up to temperature brazing temperature, so it would probably=20
> take a high BTU torch and perhaps a larger propane tank (like for the=20=

> BBQ grill) =A0rather than the smaller bottles.=A0 I would certainly =
try it=20
> on a junk housing first.=A0 But, seeing what they did in the H2000 =
video=20
> with that stuff, I would say it's certainly worth a try.=A0
> =A0
> =A0
> Ed

Hi Ed and Doug,
I have been following the posts on al brazing, but I am not sure I have=20=

this right.
Are you suggesting that a SS Pport tube could be TIG welded to the=20
steel liner inside the rotor housing and  brazed to the cast aluminum=20
housing on the outside?
This sounds like the ultimate solution
BR, Dave McC

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On 30, Jun , at 9:08 AM, Ed Anderson wrote:


<excerpt>Doug, I have not tried that particular brazing job, but I
think it would be much better than just about any other method so far
mentioned.=A0 However, that rotor housing =A0is=A0 a large mass of =
aluminum
to get up to temperature brazing temperature, so it would probably
take a high BTU torch and perhaps a larger propane tank (like for the
BBQ grill) =A0rather than the smaller bottles.=A0 I would certainly try =
it
on a junk housing first.=A0 But, seeing what they did in the H2000 video
with that stuff, I would say it's certainly worth a try.=A0

<x-tad-bigger>=A0</x-tad-bigger>

<x-tad-bigger>=A0</x-tad-bigger>

Ed

</excerpt>

Hi Ed and Doug,

I have been following the posts on al brazing, but I am not sure I
have this right.=20

Are you suggesting that a SS Pport tube could be TIG welded to the
steel liner inside the rotor housing and  brazed to the cast aluminum
housing on the outside?

This sounds like the ultimate solution=20

BR, Dave McC


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